<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title></title>
    <script type="text/javascript" src="./js/vue.js"></script>
</head>

<body>
    <!-- 准备好一个容器 -->
    <div id="root">
        <!-- 遍历数组 -->
        <h2>人员列表(遍历数组)</h2>
        <button @click.once="add">添加一个老刘</button>
        <ul>
            <!-- p是我其中一条数据的内容 我要拿到里面的东西就要自己.name .age拿-->
            <li v-for="(p,index) of persons" :key="p.id">
                {{p.name}}--{{p.age}} <input type="text">
            </li>
        </ul>
    </div>

    <script type="text/javascript">
        Vue.config.productionTip = false;  //阻止Vue在启动时生成 生产提示

        //创建Vue实例
        new Vue({
            el: '#root',
            data: {
                persons: [
                    { id: '001', name: '张三', age: 18 },
                    { id: '002', name: '李四', age: 17 },
                    { id: '003', name: '王五', age: 16 }
                ],
            },
            methods: {
                add() {
                    const p = { id: '004', name: '老刘', age: 20 }
                    this.persons.unshift(p)
                }
            }
        })
    </script>
</body>

</html>